Why Kyle Shanahan doesn’t have the 49ers do wet-ball drills

Levi's Stadium is expected to be drenched from a downpour of rain when the San Francisco 49ers host the Indianapolis Colts tonight. The anticipation of rain will often lead to coaches holding wet-ball drills during practices. Head coach Kyle Shanahan doesn't believe in doing that, however, and explained why this week.

"I bring it up and talk to the players about it," Shanahan told NBC Sports Bay Area. "So, they're all thinking about it mentally so they can get ready however it effects them. I know, at least when I played football, when I thought about the rain is when I dropped everything. So I try to not think about it, and try to catch it the same, try to do stuff. And I always felt, mentally, that was a lot better. You always thought it might slip and stuff, and you get soft with your hands, then it slipped.

"So, I think each quarterback is different. Some guys can throw in rain; some can't. I think Jimmy does. He doesn't have a problem with it, which I think always gives you an advantage. But you go back to [John] Elway, Elway could throw in freezing snow, he could do it all, but if it started raining out there, he's really struggled.

"So, it's different, and when that happens, you've got to adjust, and you've got to see how it changes everyone, but I think we'll be alright."

Kickoff between the 49ers and Colts is scheduled for 5:20 p.m. PT. The downpour is expected throughout the day and into tomorrow.